不同骨架连接方式及覆面板类型小截面木框架墙体抗侧性能研究  

Research on Lateral Resistance of Small-Section Wooden Frame Shear Walls with Different Post-Beam Connections and Cladding Panel Types

作　　者：龙卫国[1] 李秋稷[1] 刘宜丰[1,2] 鲁纹帆 欧加加 潘鹏[2] LONG Weiguo;LI Qiuji;LIU Yifeng;LU Wenfan;OU Jiajia;PAN Peng(China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610042,China;Tsinghua University,Beijing 100084,China;China National Organization for Timber Construction Design Standard,China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610042,China)

机构地区：[1]中国建筑西南设计研究院有限公司,成都610042 [2]清华大学,北京100084 [3]中国建筑西南设计研究院有限公司国家标准木结构设计规范管理组,成都610042

出　　处：《工业建筑》2023年第8期135-144,117,共11页Industrial Construction

基　　金：国家重点研发计划(2019YFD1101001)。

摘　　要：小截面木框架剪力墙是由小截面框架柱(端柱)、间柱和覆面板组成。剪力墙梁柱连接方式、覆面板剪切模量对墙体抗侧性能影响的相关研究较少。通过覆面板剪切模量测试试验得到了不同类型覆面板的剪切模量特征值,在此基础上,对3种不同连接方式的墙体、2种不同厚度的针叶材胶合木板墙体以及OSB板墙体进行低周往复试验研究和数值模拟分析,得到墙体的破坏模式、平均刚度、平均强度、延性系数和刚度退化规律。结果表明:采用金属榫连接的墙体正负双方向性能更稳定;针叶材胶合板和OSB板的剪切模量特征值分别为291.67 MPa和389.17 MPa;12 mm厚胶合板墙体的刚度和承载力分别高于同厚度OSB板墙体2.95%和39.5%,24 mm厚胶合板墙体刚度和承载力分别高于同厚度OSB板墙体16.39%和25.1%。研究成果进一步明确了影响小截面木框架剪力墙抗侧性能的主要因素,对该体系的应用和推广有重要的指导意义。Small-section wooden frame shear wall is composed of small-section frame columns(end columns),studs and cladding panels.There are few researches on the influence of beam-column connection mode and shear modulus of cladding panel on the lateral resistance of shear wall.The shear modulus characteristic values of different types of cladding panels were obtained through shear modulus test.On this basis,the quasi-static loading test and numerical simulation test were carried out on three walls with metal tenon,inclined nail connection and straight tenon-metal connection,two coniferous plywood walls with different thickness and two OSB board walls with different thickness,the failure mode,average stiffness,average strength,ductility coefficient and stiffness degradation law of the wall were obtained.The results showed that the average stiffness and average bearing capacity of walls with three connections were not significantly different,but the push-pull bidirectional performance of the wall with metal tenon connections was more stable.The characteristic value of the shear modulus of the coniferous plywood was 291.67 MPa,and that of the OSB board was 389.17 MPa;the stiffness and bearing capacity of 12 mm thickness plywood wall were 2.95%and 39.5%higher than those of OSB wall with the same thickness,and the stiffness and bearing capacity of 24 mm thickness plywood wall were 16.39%and 25.1%higher than those of OSB wall with the same thickness,respectively.The results further clarified the main influencing factors for the ateral performance of smallsection wood frame shear wall,which could provide important guiding significance for the application and promotion of the system.

关 键 词：小截面木框架剪力墙 低周反复荷载 受力性能 刚度 

分 类 号：TU366.2[建筑科学—结构工程]